Alcohol Combined With Cannabis Increases THC Levels

Posted by | Alcohol and Drug Use | May 27, 2015

While it is commonly understood that combining drugs and alcohol often amplifies the effects on the body, there is still poor understanding of the interaction of cannabis with alcohol. A recent study published in Clinical Chemistry shines a light on the simultaneous use of marijuana and alcohol, showing that the combination produces a significantly higher concentration of THC in the blood.

“To shed light on the ways in which cannabis and alcohol interact to negatively impact driving, a group of researchers studied 19 adult participants who drank placebo or low-dose alcohol (with a target peak breath-alcohol concentration of approximately 0.065%) 10 minutes prior to inhaling 500 mg of placebo, low-dose (2.9% THC), or high-dose (6.7% THC) vaporized cannabis. The researchers found that with no alcohol, the median maximum blood concentrations for low and high THC doses were 32.7 and 42.2 µg/L THC, respectively, and 2.8 and 5.0 µg/L 11-OH-THC. With alcohol, the median maximum blood concentrations for low and high THC doses were 35.3 and 67.5 µg/L THC and 3.7 and 6.0 µg/L 11-OH-THC — which is significantly higher than without alcohol.”

Click here to read the full release from Science Daily.

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